IL137861A - Methods and apparatus for calibrating parameters for a z-axis tracking loop - Google Patents
Methods and apparatus for calibrating parameters for a z-axis tracking loopInfo
- Publication number
- IL137861A IL137861A IL13786100A IL13786100A IL137861A IL 137861 A IL137861 A IL 137861A IL 13786100 A IL13786100 A IL 13786100A IL 13786100 A IL13786100 A IL 13786100A IL 137861 A IL137861 A IL 137861A
- Authority
- IL
- Israel
- Prior art keywords
- detector
- collimator
- accordance
- determining
- focal spot
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000003384 imaging method Methods 0.000 claims abstract description 15
- 238000013170 computed tomography imaging Methods 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims description 19
- 230000035945 sensitivity Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 11
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 claims description 3
- 238000012935 Averaging Methods 0.000 claims 1
- 238000002591 computed tomography Methods 0.000 description 12
- 240000007509 Phytolacca dioica Species 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012886 linear function Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating thereof
- A61B6/582—Calibration
- A61B6/583—Calibration using calibration phantoms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/419—Imaging computed tomograph
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/60—Specific applications or type of materials
- G01N2223/612—Specific applications or type of materials biological material
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Theoretical Computer Science (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Pulmonology (AREA)
- Biochemistry (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/384,937 US6310938B1 (en) | 1999-08-27 | 1999-08-27 | Methods and apparatus for calibrating CT x-ray beam tracking loop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL137861A0 IL137861A0 (en) | 2001-10-31 |
| IL137861A true IL137861A (en) | 2004-07-25 |
Family
ID=23519354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL13786100A IL137861A (en) | 1999-08-27 | 2000-08-15 | Methods and apparatus for calibrating parameters for a z-axis tracking loop |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US6310938B1 (ja) |
| EP (1) | EP1094315A1 (ja) |
| JP (1) | JP4554046B2 (ja) |
| IL (1) | IL137861A (ja) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6310938B1 (en) * | 1999-08-27 | 2001-10-30 | General Electric Company | Methods and apparatus for calibrating CT x-ray beam tracking loop |
| US6652143B2 (en) * | 2001-04-12 | 2003-11-25 | Siemens Aktiengesellschaft | Method and apparatus for measuring the position, shape, size and intensity distribution of the effective focal spot of an x-ray tube |
| US6535572B2 (en) * | 2001-06-15 | 2003-03-18 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for compensating computed tomographic channel ganging artifacts |
| US6890098B2 (en) * | 2002-11-22 | 2005-05-10 | Agilent Technologies, Inc. | Method for calibrating the intensity profile for a movable x-ray source |
| US6873675B2 (en) * | 2002-12-18 | 2005-03-29 | Ge Medical Systems Global Technology Company, Llc | Multi-sector back-off logic algorithm for obtaining optimal slice-sensitive computed tomography profiles |
| JP4596748B2 (ja) * | 2003-05-07 | 2010-12-15 | キヤノン株式会社 | 放射線画像撮影装置及び放射線画像撮影装置における再構成方法 |
| US20050084147A1 (en) * | 2003-10-20 | 2005-04-21 | Groszmann Daniel E. | Method and apparatus for image reconstruction with projection images acquired in a non-circular arc |
| US6980623B2 (en) * | 2003-10-29 | 2005-12-27 | Ge Medical Systems Global Technology Company Llc | Method and apparatus for z-axis tracking and collimation |
| JP4615265B2 (ja) * | 2004-07-22 | 2011-01-19 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 放射線撮影装置 |
| CN100381103C (zh) * | 2005-03-22 | 2008-04-16 | 东软飞利浦医疗设备系统有限责任公司 | 一种ct机几何参数校正方法 |
| DE102005020124B4 (de) * | 2005-04-29 | 2011-07-14 | Siemens AG, 80333 | Röntgensystem, enthaltend einen zugeordneten, mobilen Festkörperdetektor und Verfahren zur Aufnahme und Anzeige eines Röntgenbildes |
| US7257187B2 (en) * | 2005-05-06 | 2007-08-14 | General Electric Company | Methods and apparatus for calibrating CT x-ray beam tracking loop |
| US7399119B2 (en) * | 2005-09-19 | 2008-07-15 | General Electric Company | Method and system for measuring an alignment of a detector |
| US7409043B2 (en) * | 2006-05-23 | 2008-08-05 | General Electric Company | Method and apparatus to control radiation tube focal spot size |
| JP2010500550A (ja) * | 2006-08-09 | 2010-01-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | ビーム整形装置内に位置付けられた可動式エッジによる焦点サイズ測定 |
| JP5242155B2 (ja) * | 2007-12-27 | 2013-07-24 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Ｘ線ｃｔ装置 |
| CN103549971B (zh) * | 2013-11-07 | 2016-03-09 | 北京航空航天大学 | 一种确定c型臂断层成像系统中几何标定参数的方法 |
| CN105769231B (zh) * | 2016-02-18 | 2018-12-11 | 赛诺威盛科技（北京）有限公司 | 一种限束器在z轴上的射线跟踪方法 |
| CN107095690B (zh) | 2017-05-31 | 2021-05-07 | 上海联影医疗科技股份有限公司 | 一种跟踪x光源焦点位置的装置、系统及方法 |
| EP3413691A1 (en) * | 2017-06-08 | 2018-12-12 | Koninklijke Philips N.V. | Apparatus for generating x-rays |
| US10531850B2 (en) | 2017-09-07 | 2020-01-14 | General Electric Company | Mobile X-ray imaging with detector docking within a spatially registered compartment |
| CN108918559B (zh) * | 2018-07-28 | 2021-08-17 | 北京纳米维景科技有限公司 | 一种实现图像自校正的x射线图像探测器及其方法 |
| DE102018215724A1 (de) | 2018-09-14 | 2020-03-19 | Carl Zeiss Industrielle Messtechnik Gmbh | Verfahren zum Beeinflussen einer Position eines Brennflecks in einer Röntgenstrahlungsquelle eines Computertomographen und Computertomograph |
| CN113749677A (zh) * | 2020-10-20 | 2021-12-07 | 宽腾(北京)医疗器械有限公司 | CT系统z向位置调整工具及其调整方法 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485493A (en) | 1988-10-20 | 1996-01-16 | Picker International, Inc. | Multiple detector ring spiral scanner with relatively adjustable helical paths |
| US4991189A (en) | 1990-04-16 | 1991-02-05 | General Electric Company | Collimation apparatus for x-ray beam correction |
| DE4207006C2 (de) | 1992-03-05 | 1994-07-14 | Siemens Ag | Computertomograph |
| US5469429A (en) | 1993-05-21 | 1995-11-21 | Kabushiki Kaisha Toshiba | X-ray CT apparatus having focal spot position detection means for the X-ray tube and focal spot position adjusting means |
| US5550886A (en) | 1994-11-22 | 1996-08-27 | Analogic Corporation | X-Ray focal spot movement compensation system |
| US5684855A (en) * | 1995-02-16 | 1997-11-04 | Kabushiki Kaisha Toshiba | X-ray CT scanner |
| AU7255196A (en) | 1995-11-28 | 1997-06-19 | Analogic Corporation | Precalibrating x-ray tube focal spot |
| US6370218B1 (en) | 1995-12-21 | 2002-04-09 | General Electric Company | Methods and systems for determining x-ray beam position in multi-slice computed tomography scanners |
| US5579359A (en) | 1995-12-21 | 1996-11-26 | General Electric Company | Methods and apparatus for calibrating detector cell output signals |
| US5610963A (en) * | 1996-02-06 | 1997-03-11 | General Electric Company | Methods and systems for determining the z-axis profile of a detector in a CT system |
| US5761257A (en) | 1996-12-02 | 1998-06-02 | General Electric Company | Normalizing projection data in a computed tomography system |
| US6115447A (en) * | 1997-11-07 | 2000-09-05 | General Electric Company | Multi-slice biopsy with single slice computed tomography |
| US6141402A (en) * | 1998-08-25 | 2000-10-31 | General Electric Company | Methods and apparatus for dose verification in an imaging system |
| US6056437A (en) * | 1998-08-25 | 2000-05-02 | General Electric Company | Methods and apparatus for imaging system detector alignment |
| US6256364B1 (en) | 1998-11-24 | 2001-07-03 | General Electric Company | Methods and apparatus for correcting for x-ray beam movement |
| US6310938B1 (en) * | 1999-08-27 | 2001-10-30 | General Electric Company | Methods and apparatus for calibrating CT x-ray beam tracking loop |
-
1999
- 1999-08-27 US US09/384,937 patent/US6310938B1/en not_active Expired - Lifetime
-
2000
- 2000-08-15 IL IL13786100A patent/IL137861A/en not_active IP Right Cessation
- 2000-08-16 EP EP00307005A patent/EP1094315A1/en not_active Withdrawn
- 2000-08-25 JP JP2000254735A patent/JP4554046B2/ja not_active Expired - Fee Related
-
2001
- 2001-09-10 US US09/950,261 patent/US6411677B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IL137861A0 (en) | 2001-10-31 |
| JP2001170041A (ja) | 2001-06-26 |
| US6310938B1 (en) | 2001-10-30 |
| US20020021785A1 (en) | 2002-02-21 |
| US6411677B1 (en) | 2002-06-25 |
| JP4554046B2 (ja) | 2010-09-29 |
| EP1094315A1 (en) | 2001-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Patent granted | ||
| KB | Patent renewed | ||
| MM9K | Patent not in force due to non-payment of renewal fees |